Question : Under IE8, my website looks different when I view it at sitename vs sitename.domain.com

Somehow the CSS is not correct and I can't find the issue.

The site is helpdesk.janpak.com.  It's a windows server running wamp.

When I'm in the office I can just type in helpdesk and get to the site but under IE8, the margins and css appear a little messed up.  things shifted to the left or right.  The problem isn't seen in Firefox 3.6.

Answer : Under IE8, my website looks different when I view it at sitename vs sitename.domain.com

This is not valid (X)HTML.  You have almost no hope of getting consistent rendering if you do not have valid markup.

Please see the output of the report here.  After these 64 issues are corrected, please post back if you are still having a problem.

http://validator.w3.org/check?uri=http%3A%2F%2Fhelpdesk.janpak.com%2F&charset=%28detect+automatically%29&doctype=Inline&group=0

Best, ~Ray